FR3053645B1 - METHOD FOR MANAGING A DEFECT RELATING TO AN ALARM DEVICE OF A MOTOR VEHICLE. - Google Patents

Abstract

A method for managing a defect relating to a burglar alarm device (2) of a motor vehicle comprising a step of detecting a defect relative to the antitheft alarm device (2), characterized in that it comprises a step of restitution of an alert message by means of at least one of the elements of the group comprising a vehicle display screen and a vehicle audio reproduction device, triggered after a first detection of the defect has made and before a subsequent implementation of said detecting step.

Description

METHOD FOR MANAGING A DEFECT RELATING TO AN ALARM DEVICE OF A MOTOR VEHICLE.

The present invention generally relates to the management of a fault relating to a burglar alarm device fitted to a motor vehicle.

An anti-theft alarm device of a vehicle comprises one or more anti-theft sensors, such as an ultrasonic motion sensor or an anti-lift sensor, and a module for transmitting an alarm or siren sound intended , in case of positive detection by the sensor, that is to say in case of detection of an act corresponding potentially to theft or attempted theft of the vehicle.

Multiple failures or defects can affect the proper operation of the burglar alarm device, such as a break in the link between the siren and the BSI (Intelligent Servitude Box), or central computer, the vehicle, a defect at a sensor of the burglar alarm device, an internal fault of a housing containing the sensor or sensors or a positioning defect of this housing.

It is known, if necessary, to detect such defects and to go back to the BSI which stores them in a fault log. In the case of a break in the link between the BSI and the siren, it is also known to turn on an indicator of a device for activating / deactivating the volumetry of the alarm siren in order to signal the defect to the user of the vehicle. However, such an alert is not very explicit for the user. In the case of a defect of another nature of the anti-theft alarm device, the user is generally not alerted.

[0005] EP772854 discloses a motor vehicle alarm system with an ultrasonic motion sensor. If no movement is detected within a period of time during which at least one movement should have been detected, for example during the 60 seconds following the engine stop and corresponding to a period during which the driver should open the driver's door then close it, then the sensor is assumed to be faulty and a failure counter is incremented. If the sensor resumes operation later, the failure counter is reset. On the other hand, if the counter reaches a certain value, for example five, a fault message is displayed and indicates to the driver that the ultrasonic sensor is defective.

Such a solution however does not allow to be alerted quickly in case of failure of the burglar alarm device.

Ultimately, whatever the nature of the detected fault in the burglar alarm device, the user is not alerted quickly and clearly.

The present invention improves the situation.

For this, a first aspect of the invention relates to a method for managing a defect relating to a burglar alarm device of a motor vehicle comprising a step of detecting a fault relating to the alarm device. antitheft device, characterized in that it comprises a step of restoring an alert message by means of at least one of the elements of the group comprising a vehicle display screen and an audio reproduction device of the vehicle, triggered after a first detection of the defect has been made and before a subsequent implementation of said detecting step.

Thanks to this, the driver of the vehicle is notified clearly, explicitly and quickly of the failure of the burglar alarm device.

Advantageously, the return of the alert message is decorrelated from a system for activating and deactivating the antitheft alarm.

In a particular embodiment of the invention, the restitution step is performed when starting the vehicle following the first detection of the defect.

Thus, the driver is notified of the failure as soon as he wants to use his vehicle after the fault has been detected.

Advantageously, the step of detecting a fault relative to the burglar alarm device is implemented during a diagnosis of the burglar alarm device whose execution is triggered on activation of said burglar alarm device. .

Advantageously, during the detection step, at least one of the defects of the group comprising a defect of an ultrasonic motion sensor, a defect of an anti-lifting sensor, an internal defect is detected. a housing containing at least one sensor, a positioning fault of said housing, a connection fault between a transmission module of an audible alarm and the computer.

A second aspect of the invention is a computer of a motor vehicle having a connection interface to a burglar alarm device and a management module of a signaling information of a detected fault relating to the device of the invention. anti-theft alarm received from the anti-theft alarm device, characterized in that said management module is arranged to trigger a return of an alert message by means of at least one of the elements of the group comprising a screen of display of the vehicle and a device audio restitution of the vehicle, triggered after a first detection of the defect was made and before a subsequent detection of the defect.

Advantageously, the management module is arranged to trigger the return of the alert message when starting the vehicle following the first detection of the defect.

A third aspect of the invention relates to an onboard network of a motor vehicle comprising the computer as defined above and an anti-theft alarm device.

Advantageously, the antitheft alarm device comprises at least one of the group of sensors comprising an ultrasonic motion sensor and an anti-lifting sensor.

Advantageously, the computer comprises diagnostic means arranged to detect at least one of the defects of the group comprising a defect of an ultrasonic motion sensor, a defect of an anti-lift sensor, an internal defect of a housing of the anti-theft alarm device containing at least one sensor, a positioning fault of said housing, a connection fault between an emission module of an audible alarm and the computer [0021] A final aspect of the The invention relates to a motor vehicle comprising a computer as defined above and / or an onboard network as previously defined and / or hardware and / or software means for implementing the steps of the previously defined method.

Other features and advantages of the present invention will appear more clearly on reading the following detailed description of a particular embodiment of the invention, given by way of non-limiting example and illustrated by the drawings. appended in which: FIG. 1 represents a functional block diagram of a part of an on-board network of a motor vehicle equipped with a burglar alarm device; FIG. 2 represents a flowchart of the steps of the method for managing a defect of the antitheft alarm device, according to a particular embodiment of the invention.

It will be understood that various modifications and / or improvements obvious to those skilled in the art can be made to the various embodiments of the invention described in this description without departing from the scope of the invention defined by the appended claims.

In Figure 1, there is shown a part of a network or onboard system of a motor vehicle. For the sake of clarity, only the elements of the onboard network necessary for the understanding of the invention will be described later.

The network 200 includes a computer 1, a device or burglar alarm system 2 and an interface HMI 3.

In the particular embodiment described, the computer 1 is a central computer integrated in an electronic control unit 100, here called BSI (Built-in Systems Interface). The BSI 100 is a central control module, the heart of the system, to which the various networks and / or modules of the vehicle are connected. It controls the entire system including software modules run by the central computer 1. Different roles are assigned to the BSI 100: coordinator and CAN gateway, security system, diagnosis, driver assistance, etc.

The BSI box 100 includes a connection interface with the modules and / or networks of the system, comprising a plurality of connectors. Only some of these connectors (in particular 10a, 10b, 10c) are shown in FIG.

The HMI interface 3, or user interface, comprises in a known manner hardware and / or software elements intended to act as a communication interface between the vehicle system or network 200 of the vehicle and a user. In particular, the HMI interface 3 comprises at least one display screen 30 and at least one loudspeaker, or audio reproduction device, 31. The invention could, however, use only one of these two elements (c). that is, the screen or the speaker). These elements 30, 31 of the HMI interface 3 are connected by a bus to a connector 10c for connection to the central computer 1 which integrates one or more software drivers (not shown) for controlling the operation of these elements.

A control module 13, integrated with the BSI, manages the display and the audio restitution. It provides and controls the display of the information on the screen 30 (in particular the content of the displayed screens) and the audio reproduction or broadcasting of information by means of the audio reproduction device 31.

The burglar alarm device 2 comprises one or more sensors 21, 22 and a module 20, or a siren, sound emission of an alarm in case of positive detection by one of the sensors, it is that is, in the event of detection of an act potentially corresponding to a theft or attempted theft of the vehicle.

In the embodiment described here, the alarm device 2 comprises an ultrasonic motion sensor 21 and an anti-lift sensor 22. These two sensors 21, 22 can be integrated into a single module. detection 23. This module 23 comprises a protective housing 24 and several external connectors 25a, 25b and 25c. It also integrates a diagnostic block 26, intended to diagnose the state of the sensors 21, 22 and the housing 24. The purpose of this diagnostic block is to detect one or more of the defects relating to the detection module 23. In the example embodiment described here, the detectable defects are as follows: ultrasonic sensor defect 21, defect of the anti-lift sensor 22, internal defect of the housing 24 or the module 23, positioning defect of the housing 24.

The sound emission module 20, or alarm siren, is intended to emit a siren or audible alarm if positive detection by one of the sensors 21 and 22, in other words if a movement is detected by the sensor ultrasound 21 and / or if a lifting of the vehicle is detected by the sensor 22. The module 20 has a plurality of external connectors 27a, 27b and 27c.

In the particular embodiment described here, the detection module 23 and the sound emission module 20 are connected to the BSI box 100, as follows: the connector 25a of the module 23 and the connector 27B of the sound emission module (or siren) 20 are connected to the connector 10b of the BSI 100 via a first bus 101; the connector 25b of the module 23 and the connector 27b of the sound emission module 20 are connected to the connector 10a of the BSI 100 via a second bus 102; the connector 25c of the module 23 and the connector 27a of the sound emission module 20 are connected to ground.

The first bus 101 is for the 12V power supply of the computer 1, also connected to ground. The modules 20 and 23, connected to this power bus 101 and to the ground, are thus also supplied with 12V.

The second bus 102 makes it possible to connect the modules 20 and 23 to the computer 1, in particular to transmit the information sent to the computer 1.

The central computer 1 is intended to receive fault signaling information from the system, including defects detected by vehicle sensors such as sensors 21 and 22 of the alarm device 2. A fault management module 11 , integrated in the computer 1, is intended to receive and manage or process the detected fault signaling information. This management module 11, here software, is connected to an internal memory 12 for storing a fault log, or JDD, in which the errors returned to the central computer 1 are recorded.

The defects relating to the burglar alarm device 2 may for example include a fault of the ultrasonic motion sensor 21, a defect of the anti-lift sensor 22, an internal fault of the housing or detection module 23, a defective positioning of the housing 24 and / or a connection fault of the siren 20 (for example when the siren is disconnected). These defects are, if necessary, intended to be detected by diagnostic blocks integrated in the module 23 (for defects related to the sensors 21 and 22 and the housing 24) or directly in the BSI 100 or in the computer 1 (for connection faults with the siren).

The signaling information of a fault may include a fault identification code of the detected fault. The fault codes that can be transmitted by the detection module 23 to the computer 1 here comprise the following codes: FEE0 corresponding to a defect of the ultrasonic motion sensor 21; - FEE2 corresponding to a defect of the anti-lift sensor 22; - FEE8 corresponding to an internal fault of the housing or detection module 23; - FEEE corresponding to a positioning fault of the housing 23.

The management module 11 is arranged to record the defects relating to the anti-theft alarm device 2, here in the memory fault log 12, and to trigger a return of a failure alert message, noted "MADD", signaling a detected fault relating to the anti-theft alarm device 2 by the HMI interface 3, in particular by display on the display screen 30 and / or by audio reproduction by means of the loudspeaker 31. Restitution alarm device MA 2 alarm message is triggered based on a first detection of a fault. More specifically, the return of the alert message is triggered after a first detection of a fault relating to the alarm device 2 has been made (that is to say after such a defect has been detected a first time) and before the implementation of a subsequent fault detection operation. The alarm failure message of the alarm device 2 is returned by display on the screen 30 and / or audio broadcast by the speaker 31. In addition to the return of the alert message MA DD, a source a light (for example an LED) of a system for activating / deactivating the antitheft alarm enabling the audible alarm to be activated or deactivated (for example a system for activating / deactivating the volumetry of the siren 20 such a "push alarm" button) can be lit to signal the alarm device 2 failure after the first detection of the fault. In any event, the return of the alert message is uncorrelated, independent of this activation / deactivation of the alarm system.

The alert message MA DD is a message adapted to explicitly indicate to a user that the burglar alarm device is faulty. It advantageously has the form of a text message, for example of the type "burglar alarm faulty". It may, however, include a pictogram to display.

In the embodiment described here, the management module 11 is arranged to trigger the return of the alert message MA DD when starting the vehicle subsequent to the first detection of the defect, in other words during the first start of the vehicle following the first detection of the defect. The management module 11 advantageously controls the return of the alert message by the HMI interface 3 (screen and / or loudspeaker) when the driver puts the ignition on, or when putting the + APC.

We will now describe, with reference to Figure 2, the method of managing a fault relating to the burglar alarm device 2 of the motor vehicle, according to a particular embodiment of the invention. The method corresponds to the operation of the onboard network 200 comprising the computer 1, the burglar alarm device 2 and the HMI interface 3. It is assumed here that the alarm device 2 has a fault.

The method comprises a step E1 (positive) detection of a defect relative to the burglar alarm device. We note DD the detected fault. This step E1 occurs during a diagnostic operation E0 of the burglar alarm device 2. The execution of such a diagnosis is for example triggered automatically when the burglar alarm device 2 is activated. Activation of the alarm device can be controlled automatically, for example after a driver has turned off the engine and exited the vehicle, or on a specific user command via the HMI interface of the vehicle. . The diagnosis here consists in checking the state of the sensors 21, 22, the internal state and the position of the housing 24 and if the siren 20 is connected to the computer 1. However, it would be possible to envisage the diagnosis of the alarm device. anti-theft device 2 and / or to detect a defect relative to the anti-theft alarm device 2 at any other time, during the running of the vehicle or when it stops, automatically or on the specific command of a user or an operator (for example a repairer).

In a next step E2, a signaling information of the detected fault DD, denoted INFDD, is transmitted to the fault management module of the central computer 1. If the fault detected relates to one of the sensors 21, 22 or the case 24 (internal fault or bad positioning), the detected fault signaling information is here one of the previously listed fault codes, namely FEE0, FEE2, FEE8 or FEEE. The fault code corresponding to the detected fault is transmitted by the module 23 to the computer 1. If the fault concerns the connection between the computer 1 and the siren 20, the fault is detected by the computer 1 itself, by a diagnostic block of connectors, and information indicating the connection fault is transmitted to the module 11 for managing defects.

Then, during a step E3, the fault management module 11 stores in memory the detected fault DD, here in the fault log or JDD of the vehicle. This step E3 consists of recording data relating to the detected fault, such as the code and / or fault identification data and time data relating to the date and time of detection of the fault.

Then, the method implements a step E4 of restitution of a MADD alert message signaling the detected fault relating to the anti-theft alarm device 2. The E4 return of the alert message MA DD is made by display on the display screen 30 of the vehicle and / or audio broadcast using the speaker 31 (or audio playback device) of the vehicle. For example, the MA DD warning message is a text message of the form "Burglar alarm faulty" and / or include an explicit pictogram indicating the failure. The alert message could also specify the nature of the detected fault. In any event, the message MA DD is intended to clearly and explicitly warn a user of the vehicle that the anti-theft alarm device 2 of the vehicle has failed. The restitution E4 of the warning message is triggered on the basis of a first detection of the fault. More precisely, it is triggered after a first detection of the defect has been made (that is to say after the defect in question has been detected a first time) and before a subsequent or subsequent implementation of the step E1 detection. The restitution E4 of the alert message MA DD is thus subsequent to the first detection of the defect DD, in the sense that it comes after this first detection and without intermediate additional detection of the defect considered.

In parallel with the step E4 restitution of the alert message MA DD, the LED of the activation / deactivation button of the audible alarm is here turned on. The return of the warning message is however decorrelated from the activation system of the anti-theft alarm.

In the embodiment described here, the restitution step E4 is performed when starting the vehicle subsequent to the first detection of the defect DD E1, in other words during the start immediately following this first detection E1. It is therefore executed before the next implementation of the detection step E1 that will take place later than the next activation of the anti-theft alarm device 2.

Restitution E4 of the alert message MA DD is triggered here when a driver puts the ignition, otherwise when the ignition key (or the start button) goes to position "after contact" or "+ APC" or " WE ".

For example, at the time of starting the vehicle, the BSI 100 checks the fault log to check if a fault relating to the burglar alarm device 2 has been detected and recorded. If such a fault is present in the fault log, this control module 13 controls a display and / or audio playback of a message. The control of the fault log and, in the event of a fault of the alarm device, the command for displaying the MA DD warning message may be carried out by the control module 13 or by another control module.

In the embodiment described here, the fault detection step E1 during which the fault considered is detected for the first time and the step E4 of restitution of the alert message are shifted in time, the first detection following an activation of the alarm device 2 and the restitution is made at the subsequent start of the vehicle. The warning message could, however, be restored immediately after the first detection of the fault.

The restitution of the alert message can be continued or repeated as the defect considered DD is present and detected during successive implementations of the detection step E1.

Claims (9)

1. A method for managing a defect relating to a burglar alarm device (2) of a motor vehicle comprising a step (E1) for detecting a defect relative to the antitheft alarm device (2), characterized in that it comprises a step (E4) of restitution of an alert message by means of at least one of the elements of the group comprising a vehicle display screen and an audio reproduction device of the vehicle, triggered after that a first detection of the defect has been made and before a subsequent implementation of said detection step (E1) and in that, during the detection step (E1), at least one of the defects is detected of the group comprising a defect of an ultrasonic motion sensor (21), a defect of an anti-lift sensor (22), an internal defect of a housing (24) containing at least one sensor (21, 22) , a positioning fault of said housing (24), a connection fault between an transmission of an audible alarm (20) and the computer (1). 2. Method according to claim 1, characterized in that the return of the alert message is decorrelated from a system for activating and deactivating the antitheft alarm. 3. Method according to claim 1, characterized in that the restitution step (E4) is performed when starting the vehicle following the first detection of the fault (E1). 4. Method according to claim 1 or 2, characterized in that the step (E1) for detecting a defect relative to the antitheft alarm device (2) is implemented during a diagnosis of the alarm device anti-theft device (2) whose execution is triggered on activation of said anti-theft alarm device (2). 5. Calculator of a motor vehicle having an interface (10a, 10b, 10c) for connection to an antitheft alarm device (2) and a module (11) for managing a signaling information of a detected relative defect to the anti-theft alarm device (2) received from the anti-theft alarm device, characterized in that said management module (11) is arranged to trigger a return of an alert message by means of one to least of the elements of the group comprising a> vehicle display screen and a device for audio reproduction of the vehicle, triggered after a first detection of the defect has been made and before a subsequent detection of the defect. 6. Calculator according to the preceding claim, characterized in that the management module (11) is arranged to trigger the return of the alert message when starting the vehicle following the first detection of the fault. 7. Dashboard of a motor vehicle comprising the computer (1) according to one of claims 5 and 6 and an anti-theft alarm device (2). 8. Dashboard according to the preceding claim, characterized in that the anti-theft alarm device (2) comprises at least one of the sensors of the group comprising an ultrasonic motion sensor (21) and an anti-lift sensor ( 22). 9. Motor vehicle comprising a computer (1) according to one of claims 5 and 6 and / or an onboard network (200) according to one of claims 7 and 8 and / or hardware and / or software for the implementation of the steps of the method according to one of claims 1 to 4.